Exactly what Randy said, I think they only make my outdrives last a few more runs before they start digging into them again. As long as you keep the gouges(sp?) off of the outdrives by filing them flat each run the regular losi bones should be fine. They are just another bling part on the car that adds more bling than performance.

Originally posted by James Nguyen Exactly what Randy said, I think they only make my outdrives last a few more runs before they start digging into them again. As long as you keep the gouges(sp?) off of the outdrives by filing them flat each run the regular losi bones should be fine. They are just another bling part on the car that adds more bling than performance.

If your BK bones are still digging into the outdrive, something may be wrong, I've run mine since day 1 with the car and still no signs of wear at all. Actually I've gotta get some more bearings, because my CVD's are worn out and need to be replaced.

I didn't mill down the CVD to make the bearing sit flush with the outdrive, so I dont think that's the problem. My tolerances are very tight with very little slop though. I actually mill it tight and then take a file and make it perfect.